The World : S. Africa Accuses Botswana

South Africa accused Botswana again of harboring anti-apartheid guerrillas after a white South African soldier and a suspected black insurgent were killed in a gun battle on a farm near the border between the two countries. A South African military spokesman said the skirmish occurred when troops chased two suspected African National Congress guerrillas who had fired on an army patrol. Botswana has denied authorizing guerrilla attacks on South Africa from its territory. Last June, South African commandos killed 13 people in a raid on alleged guerrilla targets in Gaborone, the Botswana capital.